Carlos Alcaraz survived another erratic performance on Friday, battling to a 6-1, 3-6, 6-3, 6-4 win over Germany’s Jan-Lennard Struff to stay on track for a third straight Wimbledon crown. Alcaraz made 28 unforced errors in an inconsistent display on Centre Court but conjured enough moments of magic to eventually subdue the world number 125 and book his place in the last 16.

Alcaraz's tennis is so often a highlight reel but on grass, he does his most devastating work in the negative spaces of points.

It might just be the best deal in all of major professional sports. Tennis fans can get a chance to watch stars such as Carlos Alcaraz compete on Centre Court at Wimbledon by forking over just 15 pounds — about $20 at the current exchange rate.